OMAPL138如何在Linux下使用EDMA3驱动

yyj · 发表于 2018-1-30 11:01:43

本帖最后由 yyj 于 2018-1-30 11:01 编辑

[code]EDMA sample test application: N6 x$ q. U! E9 e1 }: B8 K
/*8 Z: x' R- g5 L7 m; \. q) u/ |: F
* edma_test.c2 m, t: {3 M! l2 U. u
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.& \9 _8 [! ]: [% ]. o* A3 P* N
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
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* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE./ ]2 w, t4 B! u) ~4 x1 w
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/8 f4 |) D" v- B+ w* X1 T8 N
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as& ^8 t7 J* V* Z+ ?7 E- d; C3 P
* published by the Free Software Foundation version 2.
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*- Q# d& J- e! J& W7 T# J4 S
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
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* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the+ G( t. X. a1 s8 C2 U
* GNU General Public License for more details.3 d6 y$ _( ~3 E7 v
*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>+ C$ `$ _7 N# e/ Y; e
#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>' _. m2 l2 ]8 a9 p' h4 d" l
#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>
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#include <mach/memory.h>
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#include <mach/hardware.h>, g( q- y) E* X0 X( c; j, z! T
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>8 @! ^: N [ B7 n9 g- m
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/9 \+ a* F; p% p
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
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#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)5 C# e( Q E0 z! y
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)2 B( N' L! d: C" O) q" V* J
#else7 t9 y% X$ e& N. i! k7 T3 ~% ? `' M
#define DMA_PRINTK( x... )" z6 Z6 P) y9 o. N& u& l
#define DMA_FN_IN
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#define DMA_FN_OUT
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#endif6 J3 n O1 W8 x! V: r* T: y/ b& E
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#define MAX_DMA_TRANSFER_IN_BYTES (32768): y* L) [7 }9 L4 f, c! i% s
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20% ~+ B. L% e, C( k& h
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22) u* G$ C' D# u2 f9 |
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;) A# t$ ?2 s- l' W7 g
static volatile int irqraised2 = 0;' b A A8 j6 m3 V- j" F) x
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);3 z+ m: `+ w( \. W0 g* P/ {
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);: d& F9 T3 K6 V. S% t5 y. [
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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dma_addr_t dmaphyssrc1 = 0;7 p% e) _+ t' F1 y# ]: }7 z
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;" y8 b- t( A% H# L- h
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char *dmabufsrc1 = NULL;+ \1 i( }* p& x3 W& l' l ~: y, j! w
char *dmabufsrc2 = NULL;6 W: p* V& }( L
char *dmabufdest1 = NULL; b' I3 \! z8 K9 q9 Y E: S
char *dmabufdest2 = NULL;# d5 K7 \# E+ u# j( j" G
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static int acnt = 512;0 Y5 T E- l# K' w! U% Z
static int bcnt = 8;
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static int ccnt = 8;, B% w; [% b7 n/ ]. c7 B
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module_param(acnt, int, S_IRUGO);" @% R8 v9 [- v, ]
module_param(bcnt, int, S_IRUGO);
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module_param(ccnt, int, S_IRUGO);

复制代码

   这是在TI上找到的一个针对Davanci处理器简单的EDMA3驱动程序测试例程的一部分，我在编译的过程中是用
arm-none-linux-gnueabi-gcc  -I /home/tl/omapl138/linux-3.3/arch/arm/include -I /home/tl/omapl138/linux-3.3/include  EDMA3test.cpp -o EDMA3这个命令来链接库文件进行编译，但是报的错误特别多，我又试着一个函数一个函数往进加，仍然是很多错误。
   我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

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[未解决] OMAPL138如何在Linux下使用EDMA3驱动